public OtlpGrpcLogExportClient(OtlpExporterOptions options, OtlpCollector.LogsService.ILogsServiceClient logsServiceClient = null)
     : base(options)
 {
     if (logsServiceClient != null)
     {
         this.logsClient = logsServiceClient;
     }
     else
     {
         this.Channel    = options.CreateChannel();
         this.logsClient = new OtlpCollector.LogsService.LogsServiceClient(this.Channel);
     }
 }
        /// <summary>
        /// Initializes a new instance of the <see cref="OtlpLogExporter"/> class.
        /// </summary>
        /// <param name="options">Configuration options for the exporter.</param>
        /// <param name="traceServiceClient"><see cref="OtlpCollector.LogsService.LogsServiceClient"/>.</param>
        internal OtlpLogExporter(OtlpExporterOptions options, OtlpCollector.LogsService.ILogsServiceClient traceServiceClient = null)
        {
            this.options = options ?? throw new ArgumentNullException(nameof(options));
            this.headers = GetMetadataFromHeaders(options.Headers);
            if (this.options.TimeoutMilliseconds <= 0)
            {
                throw new ArgumentException("Timeout value provided is not a positive number.", nameof(this.options.TimeoutMilliseconds));
            }

            if (traceServiceClient != null)
            {
                this.logsClient = traceServiceClient;
            }
            else
            {
                if (options.Endpoint.Scheme != Uri.UriSchemeHttp && options.Endpoint.Scheme != Uri.UriSchemeHttps)
                {
                    throw new NotSupportedException($"Endpoint URI scheme ({options.Endpoint.Scheme}) is not supported. Currently only \"http\" and \"https\" are supported.");
                }

// #if NETSTANDARD2_1
                this.channel = GrpcChannel.ForAddress(options.Endpoint);
// #else
//                 ChannelCredentials channelCredentials;
//                 if (options.Endpoint.Scheme == Uri.UriSchemeHttps)
//                 {
//                     channelCredentials = new SslCredentials();
//                 }
//                 else
//                 {
//                     channelCredentials = ChannelCredentials.Insecure;
//                 }

//                 this.channel = new Channel(options.Endpoint.Authority, channelCredentials);
// #endif

                this.logsClient = new OtlpCollector.LogsService.LogsServiceClient(this.channel);
            }
        }